[RFC] hostapd: DFS - handle running out of DFS channels

Jouni Malinen j at w1.fi
Mon Mar 7 01:15:43 PST 2016

On Fri, Oct 09, 2015 at 02:58:34PM +0200, Zefir Kurtisi wrote:
> In scenarios where only DFS channels are available (e.g. outdoor,
> special countrycodes), hostapd must be able to handle situations
> where all are unavailable.
> The two possibilities to get there are
> 1) while operating on the last available DFS channel a radar is
>    detected
> 2) hostapd is started while all channels are unavailable
> In both cases, hostapd instead of terminating should better
> wait for the NOPs to pass and re-try operation after the CAC.
> This patch attempts to provide this feature with minimal modifi-
> cation of the existing DFS framework. It uses the condition
> (iface->state == HAPD_IFACE_DFS && !iface->cac_started)
> as NOP mode signature to retry operation from within
> hostapd_dfs_nop_finished().

I didn't see much comments on this (no objection; one supporting this).
This was an "[RFC]" instead of "[PATCH]". Do you have an updated version
of the patch or should this RFC version be applied as-is?
Jouni Malinen                                            PGP id EFC895FA

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